Speed-changing mechanism.



W. 0. OONANT.'

IPBED OIIAIMIG IEOHAIIIBI. unlonxol ruth .0.1. mo.

Patented Mar. 2l, 1911.

u l 1i 7 um m JM@ la( W. 0. CONAN?. amm 'ounmmc nommen.

APPLIOAHOI I'lllD lll. 1. 1010.

l llllllI-llll'l 3.

Patented Har. 21,1911.

W. 0. OONANT. uns olnnxlo Invullen.

Patented 11u21, 1911.l

'l lllli'lI-IIBIH' 4,

987 nun-nu nun In. 1, m0,

W. C. CONANT.

:man cumulus Innenma.

Y APPLIOAHI FILED IAR. 'l 1010. 987,430.

Patented Har. 2l, l9l.

1 llBBT-SIEBT W. C. CONANT. v SPEED UHANOING UBGIIANIBI.

- unicum: num num. mo.

Patentad Mar. 21, 1911.

W. U. CONANT. BEBBD CHANGING IBCHANISI. nrmgnrog nu In. 1. mo.

Patent@ .uan 21, 1911.

WILLIAI( C. CONANT,

l OAK PARK, ILLINDIS.

` SPEED-CHANGING IECHANXBI.

'lo all whom it may concern:

lle it known that l. WILLIAM (l. Comm, a citizen ot' the l'nited Staten,residing at Unk lark. in the county of Cook 'and State of Illinois.Iiave invented u newI and useful lniproveiiient in Swed-Changing Merinilni,-iii. ot"ivhich the following is ii specification. n

.\l,v invention relates, more particiilarlv to improvements ina|ieed-chiiiigers for e l'icting.triinsiiiission of power lroin a driveto a driven nieniber in line ivith each other. this I vpe of devicecomprising. 'generally stated. a combination of interine-liing internaland external gears niouiited to revolve with relation to each other.these gears ing operatively connected with tie drive and driven membersand operating to tran-- init the power from the drive to the drivenineinher to drive the latter at the desired I speed.

tis

I My object is to provide "ertain in'iprovenienis in speed-changers ot'the type ,above referred to aud, iiiore particularly. to those ada teilfor speed redaction. to the end ol' rent cring then' operation iositive,and of ell'ectiiig as nearly perfect inlaiicing of the ,operative partsto pertiiii hi h speed and to prevent undue wear and ret nce noise inthe operation of the device to the niiniiniini; and. generally. to soimprove devices of this type as to rende-i' tliein highly useful for thepar aises for which they rire rovided.

.v invention ia illii-itratet in the accom- |'nn` viug drawings. inwhich`` ligiire is a longitudinal ot' the preferred embodiment of myinvention. Figa. Q. 3. 4. and t. are sections taken iit the linea 25.il, 5 and (l, respectively, on Fig. l. and viewed in the direction ofthe arrows. Fig. 7 is a view like l'g. 6 showing the parte in theinmitionftliey nssiiiiie when o rented one-quarter if a revolntimi fromt e osition represented in Fig. ti: aml Figs. @and l0, views like thatof Fig. l of three allier embodiments of in v invention.

Referring to Figs, 1 to 7 inclusive, drive-shaft, of an electric motor,or any other power de\irc. iii rreprei'ienied at ll and is jonrnaledintermediate its ends in a side-wall lit of a stationary casing 13. theopposed wall 14 of which form's a ljournal-bearing sectional viewIpectlonttoirot Letters Patent. Applttinttol Il loro! 7. i010. `lerntlo. 7.0.7.

lli for the driven-shaft t6 w ich is in alinell. The inner ment with thedrive-shaft Patented Mal'. 2l, 1911.

end of the iihiift ll extends into the plane infil'niied by thesido-Wall I4 iiiid is jonr- ||I\ I( shaft iti. wlieieliy a rigidbeiirinv for the .inner end of the shaft Il ia allori ed. The shaft llintermediate the side-wall l2 and the aliuft I6, is of enlargeddiameter, as indicated at 18. and has rigidly secured to it, as h vfi'ii'niing diiinietrically-opposed ect-entries 19 and 2D. Surroundingthtl aiiniiliir nieinber :2l formed of a disk 22 and an iiniiularllaiige 2li irojeeting hiteiiiliy therefrom and provided fin itsperiphery with gear-teeth 24. Confined between the inner circumferenceof the circular tlange :.'3 and the outer periphery of the eccentric 'aseria-s of rollers 25 which operate, when the eccentric l0 is rotated,to revolve the ineinber .*l iis hereinafter described.

tot'iperating with the member 2l. and the side-mill' l2 of the clsin aremeans operating to perniit the inenilier 2l to revolve tIn-ongh acircular path ander the action of the eccentric lll, but prevent it.from rotating upon its osviraxis, these means. in the constructionillustrated. being iis follows: The inner llat l'iu-e of the wall l2contains l circular series of recesses .'ti of circular shape incross-simian arranged preferably uiilistant from each other. asclearlyil usti'iited in Fig. f. l'oiir of these recesses bei provided inthe construction shown; and the adjacent fiictof the disk 22. whichbett-nii tlatwise against the inner face of the wall I2, likewisecontains lainiilar recesses 2T which oppose the recesses 26. Confined inthe pairs of recesses tliiis provided artl rollers 28, the opposed facesof which are flat and bear against the bottoni iviills of the recesses.tti and 2i'. The recesses .ti and 27 of each pair overlii i" each othernii represented clearl)l in Fig. l iitid are of it diameter siiii-ientto permit the nieniber 2l to freely revolvr about the shaft ll, therollers 28 thus loosely confined in theae opposed recesses alfort ingroller-keys'betweeii the member 2l. and casing-wall 1Q for preventingsaid niemher from rotating when the shaft ll is operated.

Surrounding the eccentric is n gy aiiiiiilnr nienilier ."lt formed of adia.: 30 and an an 'Ie-aliaped flange 8l projecting lateriil! \ltherefrom and affording tivo annular internal surfaces 32 a'nd 33. thelatter over# lapping the gear .t-l. Confined between the in a socket 1Tin the inner end of the' integral therewith, a pair of' eccentric lll isa revolubhlos ra torv recesses l0 and 4t time annular surface B'J'antlthe iwriphery of the i-eeentrie is a series of rollers 3l whielioperate, when the shaft 1l is rotated. to re` iolie the member 2H aboutthis shaft, these rollers being confined between a flat itiiniilar fin-eof' the disk Ill) and the faire Ilt of a ring 37 confined in an annulargroove 23' in a fare ol' the flange 23. 'lhe iiiterniil anniilar:airfare 33 of the tlange 3l is provided with guar-teeth :lil whi'limeub willi the gear 24 its illustrated in Fig. (i.

'llie driven sluzfllti eurries on its inner enil a disk-iihaped head3ttcontaining in its inner fare an annular series of reeesws as deseribedof the side-wall 1.2, these recesses being o posed by teeeiiseri 4linthe .outer face of t ie disk 30. Confined in the pairs of rovided arerollers 42 which operate to ii ord roller-key couneetion between thedriven-shaft I6 and the member 29. to permit the latter to gyi-ate andtransmit its rotary motion, irodueed as hereinafter deserilied, to theriven-sliaft for rotating it.

The operation of the device is iis follows: Rotation of the drive-shaft11 produces rotation of the eccentrica 19 and 20. whieb latter, byreason of the provision of the roller-bearings 2? and 34, vannes themember 2t and :.'tl to revolve, the intenial nml external gears 3H and24, respectively, provided on the members 2l and 29. being soproportioned that soute rtioii of thermal-"24 will alwavs be in meatwith the gear H8 4during; the revolving of the member 2l within themember 29, as illuii'lrated in Figs. t and 7, tlieinenibei-2l bein heldagainst rotation ou its own axis by t ie stationary easing 13 throughthe medium lof the rollers .f eneaaiu the curved walls of the recesses26 and 2 lait. being free to revolve about the shaft ll and traveling ina eiritnlarpath upon the internal gear 3N. eaux-ing: the latter torotate upon itx own axis with the result of eommunieatiug rotarymovement to the disk mi and driven-shaft lli through the medium of' therolleni l2. the speed of movement nf tlieilrivena liiiff depending uponth'e relative diameter 'of' thtl internal and external gears und thenumber of teeth provided thereon.

'.lhe. minstrueiion illuztrated in Fig. R ia like tliiit.ili-a'loned inthe previ-dini.' lli'urea. excepting :ni to the meute; eounertiug.r themember '2l to llu-.i-a.--in;.ir lil. and the member fl to thedriven-duif! It'. ilie means eni- Vloyed in llitironwli'nelion xliovvnin Fig. N ming as folloua; 'lhe member .'l in addition to the externalgear 2l. earriiw un iutei-nal Igear I. ou it opposed far-e wliieh uie.he.-i with :ip external girar ll ou the einl-J wiill l..!,of tbeeasiuiz lll. the eeuw lil und 4| being so proportioned that the gri-:ir4J will Ihe iu nii-Nh ut'illl timex. drriu.' its revolution", with thi`:rear 4t. 'l'hi" member tl in -ar flange ,'a'. whieh ie addition to itinternal gear 3S, eai'i'ies on its opposite faire an external gear l5which;`

meshes willi an internal gear lf' on the dish 3'. the granA l and lfbeing so proportioned :is to rauw' the gear lt'i to be in ini-.di withthe gear -l.` al all tiiuez; dui'- ing; the revolutiony ol the latter.lt will he iin'dei.-toml from the foregoing description `that wliei'ithe drive-shaft ll is operated. thel member '.l i eaused to gyrate, andits gear 2l thus moves upon the internal gear :lx with the result ofrunning the lutter to rotate as it is revolved by the eccentric 20, lherotaiv movement thus prodneA-d in the I,{e'ar li'i being eonmiunieatedto the driven- .-haft lti through the iiiediiuii of the gears und lli.'l'lie gears 42! and 44 serve to earry the reaetiou, of the members 2land 2l) to the fulernui l2 for elleetiuu rotation of the haft l'fl.

.\n obvious modification of the atrueture illustrated in Fig. .8 may bemade by substituting for the wars lll and 44 'rollerker eonneetions authas those illustrated at 28 in Fig. l, or substituting for the gears 45and -lti the miller-keys 42.

The construction illustrated in Fig. 9 is thesame as that shown in Fig.8, excepting an to the eonneetionsA between the members 2l. and 2l). lntlie construction shown in Fig. tl the members 2l and 20 instead ofbeing )rovided with gear connections as describe of the eouatriictonsillustrated in the prei-.edili`J figures, have roller-key eonnectionswith being represented at 4i' iind confined in opposed eii'eularrereaaes 48 and 40 arranged in annnlnr series in opposed faces of thesemembers respectively. its described of the eaeh other. these roller-keys10( roller-key connections of the member 2l 105 and 'being of ullieentdiameter. im ilus- 110 ltrated. to permit the ineinbem 2l and 'J togyrati. through their circular paths under the aetiou of the eiieentrieslt) and 20, the member tu operating in its gyratury movetuent to rotatethe gear -ttl and the ilriventiti -ln the eon-truetioii illustrated inFig. l0. the iiieiiilar- '.tl and 2l) rai-ry external genio .3U aud .'lrwpretively, Itud are operatively eomieeted together through the mediumof' 120 roller-liep` fr. eonfined iii opposed recesses '53 and 54 in themembersl it!) and 2l. re-

. -'peetivel v. as de.-i.rihed of the eonSti-uirtioii nlu-trated in Fig.ll. the member :2l being operatively eoiineeted with the i'asing-\vall125 I5. lhrou'gli the medium of roller-lwyri 5f. a.i deserilwd of theeonstriwton in Fitz. l. 'l'he di.-k-heml :tu of the driven-shaft lt' isirovided with a laterally extending annuprovided about its` niiniilarinner aiirfaee with gear-teeth ,'i'i' with whirli the grani .'itl andfil mesh. The etieet of driving the eri-entries lll aiiil :tti is tociiiiae the ineiiihen :it andi!!! to revolve about the shaft ll iiiengagement with thil gear .17. the said niemherei by Iii-ing heldiigiiiiiat rotation thiis operating to rrtnte this gear .-ii' andeoiiseipieiitly the Vilriveiioiliiift lt as these externa -geiirs traveliihoiit the internal ear i'ii and iii f'oniaet therewith.

' lt wilfbe noted from the foregoingdii i-eriptioii that in eaeli of theconstructions illustrated a piiir of i'evoliible' gear-meiiiheriioperated liy iliiiiiietiieiillv-opIxwed eoi'entries on the drive-shaftare provided for triiiisiiiittin piiwer from this shaft to thedriven-elialitl, and thiis the weight'on. oppimite sides of thedrive-shaft is maintained eqiiiil ai all times. and as nearly perfecti-oinitci'balain-ing as pomible is pri iihi i.ied.the throw of thecoperating eccentries 1 0 and )0 being so proportioned with relation tothe weights of the geiir-inenibem 2l and 29 as to canse the weigbtnoii opoiiite sides: of the drivembaft to he eminteriiiilanwil. 'l'liini iiithe constructions illustrated in Figs. l to n inclusive. the gear-member.21 being heavier than the member i9, the eccentric is so constructed,as illustrated, as to prodiii'e a throw of the member 2l no propor.tioned with relation to thc throw produced lby tbc eccentric 20 aa toeffect eoiinterlialiineiiig of these members ii ion the driveshiift Ilat all times. iiiiil in tlie construction illustrated in Fig. 10. theweight of the nienilieis Jl and llt being equal, the eccenii-ies I9 and.20 ire no instructed aa to etfeet. i-i|iiiil thi'ow-i. lt will also licnoted tliiit in em'h of the i'oihtriii'tionii illiiiitrateil. thi'iii-iig of the load on thi-'driven-sliaft diie to therisi-tiiiieialforileil by thel load, iii miiniiiiiiiii-iited from onerevoliibie geariiienibi-i' to theyther and tlint the ronihineil rem-tionof these gear ineniheis is i-oiiiiiiiinii-nihil to the `.ide-wall I2forming tbc fiiliiieehiinini iii operated as i limeriliei l.

Another feature of iiilviiiitiigc in inei'banisiii eoiiatriii-.ted inaccordance with in v ini'eiitioii ii. that of providing bearings for theinner end of the drive-shaft ll iliii|aieieil oIVoppositevaideii of thilrev'ilvin iiiirinei'iiliers QI and 29 iii-united theniy. thisfeaturiiwrviiig to atoril to thi` iibaft the desired bearing forresisting preieoire exerted against it hiring operation of tbenieirlianniiii.

'llie rollerlieys provided in the conotriirtion-i illiiutriiteil iiiFigs. I to 7 inrliriive and tt iinil l0. iis the ineans for connectingtogether the gear-ineiiihi-ra and the latter with the easing anddriven-shaft. ierate to exertthil iiiiiiiiiiniii degree of friction asthey rnll against the corvi-d walls of the A rem-mw of i-iii-h pair inwhich thiv are conmmao I lined, the roth-m being prevented from oi:-i-iipying a position iii which their axes of rotation` or the oirfiii-esof contart. iii'r not piiiiillil litt" reamii of the liiioail I farepi'oviileil-iit their e|iil-. diie lo their large iliiiiiietei withrelation totlie length ngniliwt Wliiili tliil filers of theiiii-iiilii'is i'iioperating then-with hear.

viiviliot journaling: tliiI roller` i and ill in the iiieiiiliei's .liiiiil 2li, but leaving thini to ti'iivel iinili'r the nitioii ill'Iliirotating recenti-irs. the niinilieis iiniy he ili'iveii fi'oni theeeiwiti'ieai with eoiiipiirntivi-lv slight. wear upon tbe niovalileparte, and by lionsing tbeiii between the tlnt fiiri'ii of the inein-Iiers 2l iinil '.9 and the faces of the ring l'" tbe movin of theserollers to a position in which t ieir iixi-s of rotation. or tbe siii'-nees of eontiii't are not'` parallel. is prevented.

All of tbe constructions illii-itriiteil uro capable of being.;r osi-dto rotate ii` driveninemlier faster tliiin the drive b v iinilcin' thilshaft i6 the drivi.-\biift iiiiil the sliiii il the driven-sli'iift. in.will he readily iindel'iitooil in the iiit. Fiii'tberinoie. if it bedeiireilthat the i'iiiiiii be the driven-ineinlier. it may he provii edin the foi-ni of a belt-pulley or gear. and be rotated by upplyiiig thedriving power through either of the iihiifts ll or lli, in which easethe shaft not ieceiving the driving power shoiilil be atie-bored.

What l chiiiii inv new. nnil desire to eenre hy Letters Patent, isz-- l.ln amido-banging mechanism. the coinliinatioii of revotiihleIar-iiieinbers niovable with relation to i-iii' i other iinil operatedfrom ii i-oiiiinoii marce iigiiiniit the reiiinliinee of n loiiil and oieriitii'ely eonnei-teil together to eiiiiiie oml o iiaidgear-iiieiiibem to renrt upon the other. ii fiilcrnni. aiiil means oirriitivelv connecting one of said vir-mein irs with iiaiil fiili'riinito exert against the hitter the i'oniliiiied reaction of the gears.

ln speedwhangiiig ineehiiiiiiini. the einnhiiiiition of gear-membersniovahle with reli|- tion to eai-b other and operated from a coinnioiiaoiii'ee iigiiinst the resistance of ii liiiiil and o ieriitivelyconnected together to caline onli o said gear-members to reiiit iinonthe ol ler. volvisiiid Rear-inenibers. ii fiilci'iiin. iiiiil meansoperatively eonnei-tini! one of siiiil gear-iiieinbers with saidfiilrriiiii to exert agiiiimt the hitter the eoinliiiieil reiiition ofthe geiiiii.

3. ln speed-changing merbaniimi. the eonihiniitioii of near-iiieiiilieniforming ariiii'rhiiiiiioi. and operatively 'mnnectei t0- giither toi'iiiiiie the reiirtion of one ariiii-mliei' to he transmitted totheother t ereof. a rotatable iiieniher o nitively connected with iiaidgear-ineehanixm to rotte there- Vith. Va fiilerimi, means operating torevolve bination of geariiieinbers operatively conlit) 'Said 't-riiiii.and nieana for rotating the other of iiaid inra, and means operativelyconnecting tie other of said gearaiieinberi-i with aid fnlcrtiiii tocarry the combined reaction ofthe gears to said falcroiii.

4. ln Sinaai-changing mechanism. thc enmn'eeted together to canse thereaction 'of one of said gear-members to be ,transmitted to the otherthereof` a rotatable ineiiiber operatively connected with saidgear-members to rotate therewith, a folcrnni, op sed eccentrics operatinto revolvc sai gears; and means operatively'connecting the other ofgear-members with said falcriini to carry the combined reaction of thegears to said fiilcriim.

5. In speed-changing mechanism. the conibination with drivin and drivenbodies, of gear-members movab e with relation to each other and operatedfrom a common source atid operativellv connected together to canse thereaction o one of said geahmenilwra to be transmitted to the otherthereof, means rotatable with one of said bodies for revolving saidgear-members, a fiilcrum. means operatively connecting one of saidgearnicinbers with said fnlcrtim to carry the conibiiied reaetionoftbe'two gears to said fnl- Haid bodies from said gear mechanism.

6. ln pwd-changing mechanism, the coinbination with driving and drivenbodies, of gear-members o ieratively connected together to canse t eraction of one of said gear-members to be transmitted to the otherthereof, o ipoiicd eccentrica rotatable with one ofsait bodies and oating to revolve aid ear-members, a fu cram, means o ieriitive 'yconnecting one of said gear-inem rs with said ftilcriim to carry thecombined rcaction of the two gears to said fisici-um, and means forrotating the other of said bodies from aid gear mechanism.

7. In speed-chan ing mechanism, the eoinbinalion with driving andilriven bodies. of gear-members operativelv connected together to cannethe reaction o one of said enrmembers to be tranaiiiitted to the othertereof. mean rotatable with laid drivin body for revolving saidgear-iiienilm'it, a fa cram. means operatively connecting one o'f saidgear-iiiei'nbers with said fnlcriim to carry the combined reaction ofthe two gears to said fiilcriini. and means for rotating said drivenbody from said gearinechanisni.

it. In speed-changing mechanism, the conibii'iiitioii with drivin v anddriven bodies. of gear-members operativel connected together to came thereaction o vone of said eat'- nieiiibera to be trainiiiiitted to theothert ieri.'-` ol'. opposed eccentrica rotatable with mid driving bodyoperating to revolve aaid gear nieiiibera, a Inici-u in, meansoperativel conneeting one of said gear members witi said iileriini tocarry the combined reaction of l cameo the two gears to said fiilernniand means for rotating said driven body f roiii -said gear mechanism.

tl. n .speed-ehiingin mechanism, the coltibinatioii with rerolii legear-members operatively connected to ther to canse the reaction of oneof sai gear-menilwrs to be trani-miitted lo thc other thereof, of aeasing in which said gear-members are located, a

rotary member, means interposed between 'one of said {.geiir-nieinbersland said easing for operatively connecting theni together and rniittingthe gear-member so connectedmto revolve, and means connecting the otherof said gear-members with said rotata're member, all so constructed andarranged as to canse the reaction of one to be transmitted to the otherand thel combined reaction of both gears to be exerted against thecasini.

l0. in speed-r ianging mechanism.. t'ho combination with gear-membersoperatively connected together to canse the rem-tion of one of saidgear-members to be transmitted tu. the other thereof, of a casing` inwhich said gear-members are located forming a fiilcrnni. rotatableeccentrics operatinghrcvolve said gear-members, n rotary member, meansinterposed between one of .said gearnieinbcrs and said casing foroperatively connecting them together and permitting the gear-member soconnected to revolve, and means eonnectin the other of said armembers tosait rotatable member. al so constructed and :wrang-iced as to canse thereaction of one gear to transmitted to the other and thc combinedreaction ot' both gears to be exerted against the fiileriim.

ll. In speed-changing mechanism, the combination with driving and drivenshafts, of gcar-nie|iibers operatively connected together to canse thereaction of one of said gear-members to be transmitted to the otherthereof, a easin in which aaidgear-m'en.- bern are loentet formih afn'leruin. means carried by one of said s iafts forrcvolvi saidgear-members, means interposed between. one of said enr-members and laidcasing for operative y connecting them together and permitting ttie geaeinher so connected to revolve-,and means connecting the other of saidar-members to he other of said shafts to e rotatable therewith, all soconstructed and arranged as to cause the reaction of one gear to betransmitted to the other and the combined. reaction of both gears to heexerted against the fulcrum.

12. The combination with driving and driven shafts, of a stationary casin fonning a fiilernm,vg`earmembera in, sai casing being operativelyconnected together to caaae the` reaction of one of aaid gear-members tobe transmitted'to' the other thereof, means yrotatablo'with one of saidshafts for revolving said gear-members, means operagear tivelyconnecting one of said gear-memberii with said canin for permitting saidgcarmember to revo i/'e lint not rotate` and means operativelyconnecting said geiir-mucliaiiism with the otlieiiof said shafts fortransmitting lo the latter rotary motion. thel whole being constructedand arranged an to camathe reaction of one gear to be transmitted to theother and the combined reaction of l. both gears to be exerted againstthe fiil- 13. 'lhe combination .with driving and drivn bodies, of astatirnary casing, iiitermeshin gicar-mamlwrs'in said casing, meansrotatab o with one of saidbodies for rci'olv ing said gear-members,means o erativelv connecting one of said gear-members with said casioand means operatively connecting lie ot ier of said gear-members to theot e of said bodies for transmitting to the latter rotary motion.

14. 'Ihe combination with driving and driven shafts, of ailiationarycasing in which the inner ends of said shafts are ioiirnaled,

ar-membera in said casing. aaid gcarmcm ra being operatively connectedtogether to cause the react ion of one of said vea r-incmbers to betransmitted to the other t iereof. means rotatable with one of saidshafts for rcvolving said gear-members, means operatively connecting oneof Iaid gear-members with riaid1 casing to carry the combined reactionof the two gears to said casing. and means for rotating the other ofsaid shafts from said gear-members.

l5. In speed-chan ing iiiechiinism. the combination of revoiiigleintermeshing genre operating against the resistance of a load. afiilcriim. and means operativelv connecting one. ol' saidgeiir-nienibers with said fiilcriini. the whole being so constructed andurranged as to canse the reaction of one gear to be transmitted to theother, and the conibined reaction of both gears to be exerted againstthe fulcriim.

16. In spoed-changin mechanism, the combination of iiitermes iinggear-members operating against the ivsistance of a load. opposedeccentrica operating to revolve said gear-members. a fulcrum, and meansopera-` tively connecting one of said gear-members with said fiilcriim,the whole being so constrnctedand arranged as to canse the reaction ofone gear to lic transmitted to the other and the combined reaction ofboth gears to he exerted againat the tiilcruni.

, -l7. ln speed-changing mechanism, the combination with driving anddriven bodies` of ilitermcshiiig gear-nicinlwr.-. means rotatable withone ot'eaid bodies for revolving said gear-members. meansA operativelyconnecting one of said r-menibcrs with said fiilcrnm. and means orrotating the other of said bodies from said gear mechanism. the

05 whole being so constructed and arranged ns Io canse tlic reaction ofone gear to be transmitted to the other alf the combined rear tion ofboth gears to ll exerted againt thc fiilcriim. I lil. ln.-|a-cd-chnnging nicchiinisln, thi.l e combination with driving :inddriven bodies, of .iiiicriiicsliing vcnnmcmlwrs. mean roatnlilc withsaid t rivili' body for revolving mid gear members. a fnlcriim, meansoperiu tively connecting one of said gear-iiieniber with saidt'nlcriini. nml mean.y for rotating said driven body from saidgciir-iiicchaiiism. the whole being so constructed nml arranged as tocanse the reaction of one gear to bc transmitted to thc other and thecombined reaction of both gears to be exerted against the fnlcrnni.

lt). The combination with driving and drivenlxidies. of a stationarycasing, inter meshing gear-memlxers in said casin eccentrica rotatable"with one of said iodies for revolving said gear-nienilairs. meansoperatively connecting one of said gear-nicmlicrs with said casing an]means operativelv connecting the other of iiiiii 'car-menilieiia withthe other 'if said bodies or transmit- -ting to thi-.hitter rotarymotion` the whole being so constructed um] arranged as to canse thereaction of one gear to be transmitted to the other and the combinedreaction of both gears to be exerted against. thc casing.

Q0. In speed -changing mechanism. the combination with driving'anddriven bodies. of gear-members operatively connected together to cansethc' 'reaction of one of said gear-mcmbera` to be transmitted to theother thereof, means rotatable with said drivin f body for revolvingsaid ar-iiiembers. a fn cram. rollerkcys operatively connecting one ofsaid gear-members with said fiilcrinn to carry the combined reaction ofthe two gears to said fiilcrnin. and ioller-keys operatively connectingthe other of said gear-inemlier.-.4 with said driven body.

2l. lnV speed-changing mechanism. the combination with driving anddriven bodies. of a pair of gear-members containing eirenbodies forrevolving nid gear-members, ii fiilcriim-meinlwr for one of saidgcni'mcnibers containin'g reces-exop )os-cd to the rc reset-s of theadjacent one o said gear-nicmbcrs. .a. head carried by the other of saidbodies and containing recesses opposing the recessie in.the one of tlicgear-members ndjacent tlici'cto. aiid roller-hcw of less dialnctcr thansaid recesses confined in thc opposed pairs thereof toA roll at. theircorvi-d which they are confined during the revolving of saidgear-members. l

2i. In speed changing mechanism. the combination with driving and drivenshafts.

* oppocod eccentrica on said driving shaft. an

hir recesses, means rotatable with one of saidV `iii-faces against thcwalls of the recesses in l iiitornnl gi-iir niid nn vxioi-inii grnrsurroundiii iniid vii't-litrii-s iind mimhiiig with e'lh otiii'r, nfnlirrnni. in tiim opvrntively noiinectsaid mar-invinlii-is. with uniddrivrn shnft for transmitting i'otiiry :notion thmito. und inoniiiiloperatively voiniwtinix tliiothor of .-tiiid gcnm to mid fiih-i'uni, fortlic purpose not forth.

23. In spoed-vliiinging iiim-liniiisin. thv i-oiiilii|iiition with;,:iiinviiiliiii'.-t opi'riitng nl vniiiiit thi'l ii-Histiiiii'v of iilond niid operaitii'vly voiiiiiolt'd togothoi' to mimitln ront;- iion ofom of said ginr-iiiiiiilwi'.-. to lio transliiittrd to thv otlii-rtlioi'oof. oppowit i'otatnhlo wocnti'ivs. nn iiiinuhii serios ofi'olli'i's i-oiiliiiod lit-twwii tho pcriphoi'ivs of Suid ovroiiti-irsnml thi' inni'i nniiiilni' surfen-os of siiid g fi-iii-iiiiinhir-4 :indoporiitiiiitr to rii'olvi' siiid guiir-iiiviiiliii's ii'litiii thili'ifi-intrics ni'i' rotiitvd, ii fiilvriini. und moniis o mrntii'i-lvontmoeting ono of siiiid gviir-iiieiii it-i's' wit unid fiih'riini toexvrtn 'ninst tlit' hitter the voiiihilitd rontftion of the ginrs, tli:whole living constructed und iirriingril to innintiiiii said roller4 iniilinuiment.

24. ln spwd -vhnnging iniwhniiisiii. thi t'oinhinntioii with drivingiind Ii'ivvn bodies. of -iiriiieiiilitrs operiitivly vonnoctt-d tngi-tier to enlist thiI reaction of one of --mid vnr-meinbi'rs to hetriinsiiiittcil to tliiothoi' n I for rotntinm www...

rotated. man viilging with the opposait .fum d said rollers formiiintlining them in iiliinvinent. n fulcriim, moans o ii'i'ntivolvoonnvcting one of nid gnrdnemiwrs with unid fiilcrnm to carry thacombined reaction of tho two to slid fiilcrnm. and monos other of slidbodies froin mii guur uivi'hiinisiti.

.s'i. In potvor-ti'nnsmission niet'haiiism. thivoniliinntion of ii pnirof members contlining opposwl i'ovonws. ono ot. which Inni roi'olnblonioi'i'iiiint with i-ielntioii to thv other` iind ro|hrkiyi-s contini-din sziid wwwa-n. thidiiinittiiipf nid rollers boing loss than thodialiithi' of siiid Nicci-iw. foi thi piii'poric set. forth.

Q6. li; Jm\\'ii'-ti:insniissim liwvhniiiniihtho t'oiiibiiiutioii of npni" of nii-inhumi-oiitnining*r oppoi'd oirvnlnr rot-.vows und supportedto rovoli'o with rt-lntion to nach thor. nml roll-A ors vontini-d insaid i'i'cosws, thil dialin-.tiers of snit] rollo-rs lit-ing lvm thunthi diiiiiiitor of siiid recvsws. for tho pnl-posi not forth.

2T. ln power-trunsinixsion nittlizinisin.tht vuiiiliiinitioii of n puirof nwiiilwis vontniiiing.r oppowd rot-sms sind supported to revoluwitliriliitioii io oni'h othvi', und rollin-s fonfincd in stiid rvu-isos.iiiiid rollt-rn lit-ing of loss diaiiwtA-i' than snid wenns-ow andlian-ing thereof, opposed occontrit-s rotntnhlv with 1 one of saidbodies and extending through slid gear-niembtn's. un nnniilnr :writ-4 ofrolli'rii contliwd botwrrii tlio pori iliuiiiw of nid em'iiiitricu iindtho lniwr iiiinnliir iiiirfiwwi ot' slid gear-membros und opi'i'ntiiigto ii-volvtsaid gear-members wlwn siiid eccnntrios iii-o llnt fiu'isndnptod to I ii-nr against thcbottoni of snid ri-cossts with which theycopi-i-uti. for the purpose sot forth.

lli pi'vrwiii'v of-- W. ll. lhvirs, It. A. Scinim'iin.

